Bolster attachment



am 0 m. 8 4 7 m N BOLSTEIR ATTACHMENT.

APPLICATION FILED QOT. 22, 1903.

N0 MODEL.

INF

awe/whoa:

Geog ge C/fiYPWd UNITED STATES Patented January 5, 1904.

PATENT OFFICE.

BOLSTER ATTACHMENT.

SPECIFICATION formingpart of Letters Patent No. 748,600, dated January5, 1904.

Application filed October 22, 1903. Serial No. 178,126. (No model.)

To a whom it may concern.-

Be it known that I, GEORGE J. FRIEND, a citizen of the United States,residing at Kingsley, in the county of Wasco and State of Oregon, haveinvented certain new and useful Improvements in Bolster Attachments, ofwhich the following isa specification.

As is well known, it is customary for drivers of vehicles to sit uponone side of the seat carried by the body of the vehicle, and, in loadedvehicles more especially, the above causes the body of the vehicle totilt in the direction or toward the side upon which the driver isseated; The tilting of the wagonbody tends to strain the king-bolt so asto cause binding thereof and,further, causes uneven wearing upon thebottom of the wagonbody.

It is the object of this invention to provide an attachment to beapplied to the bolster of the wagon-body for cooperation with adjacentdevices carried by the axle to limit the movement of the wagon-bodyinsuch a manner as to prevent the tilting action above described caused bythe weight of the driver at one side thereof.

For a full description of the invention and the merits thereof and alsoto acquire a knowledge of the details of construction of the means foreffecting the result reference is to be had to the following descriptionand drawings hereto attached.

While the-essential and characteristic features of the invention aresusceptible of modiiication, still the preferred embodiment of theinvention is illustrated in the accompanying drawings, in which Figure lis a perspective view showing the application of the attachment. Fig. 2is a front elevation of a wagon-body, the attaching device being shownin relative working position. Fig. 3 is a detail perspective view of theengaging arm carried by the bolster. Fig. 4 is a vertical sectional Viewthrough the attaching device and adjacent parts-to which the same aresecured.

Corresponding and like parts are referred to in the followingdescriptionand indicated in all the views of the drawings by the samereference characters.

The invention is shown in connection with an ordinary construction ofload-vehicle and consists of the arm 1, which is secured to the underside of the bolster 2 of the wagon-body 3. The arm 1 is secured at itsinner end to the bolster by means of a fastening-bolt or analogousdevice which connects bifurcated end portions l and 1 ,which embrace thesides of the bolster, as clearly shown. The outer end of the arm 1 isprovided with the pendent bracket 4., to which is secured afriction-roller 5, which is mounted upon an axle extending laterallyfrom the bracket and secured thereto in any substantial manner. The arm1 extends beyond the bracket and is provided with pendent flanges 6,which are received by a hanger 7, secured to'the end of the bolster 2.The hanger 7is of approximately U formand supports a spring 8 betweenthe arms thereof, which spring is interposed between the flanged end ofthe arm 1. Seats 9, consisting of cup-shaped disks, are disposed at0pposite ends of the spring. The hanger 7 is secured to the bolster 2 bymeans of a crossbolt passing through the upper portions of the arms ofthe hanger and through the bolster. The vertically-disposedbolt 10passes through an opening in the lower portion of the hanger throughopenings in the seats 9, entering a recess in the under side of thebolster. A nut 11 is disposed between the upper disk-seat 9 and the endof the arm 1 between the arms of the hanger, and this not permitsadjustment of the tension of the spring 8 for purposes which will appearhereinafter. The axle 12 carries an engaging bar 13, which bar 13 is ofapproximately arcuate form, having attaching end portions 14 extendingtherefrom, the latter being secured to adjacent parts of the axlestructure. The bar 13 is used in the capacity of a stop means to beengaged by the roller 5, which is disposed beneath the said bar. Theengaging relation of the roller and the engaging bar 13 prevents saggingor tilting of the wagon-body to one side, due to the weight of thedriver who sits thereon. The engaging bar 13 is reinforcedaboutcentrally thereof by astop 15, which projects upwardly from thecross-bar 16 of the axle 12. The strain upon the engaging bar isgreatest at the central part, because of the fact that the axle isnormally in a position to cause the roller to remain in contact withthis portion of the said bar, and for this reason it is desirable thatthe reinforced means 15 be utilized tosupport the bar 13 in the mannerstated. As the vehicle advances, the roller 5, engaging beneath theengaging bar 18, prevents any sagging or tilting of the side of the bodyof the vehicle carrying the weight of the driver, the spring 8 beingadjusted to compensate for the weight aforesaid, as well as to permitmovement of the wagon-body as the vehicle passes over obstructionscausing vibration or jar. When diiferent drivers are employed upon thevehicle, the tension of the spring 8 is adjusted in accordance with theweight of the driver in a manner which will be readily comprehended, thegreater the weight of the driver the greater the tension of the spring,and vice Versa. The friction roller 5 serves in the capacity of a stop,and the frictional contact thereof is reduced to a minimum in theturning movement of the vehicle.

The parts comprising the invention are preferably made of metal, such assteel castings or pressed-steel parts, this depending greatly upon thesize of the attachment and the vehicle to which it is to be applied.

Having thus described the invention, what is claimed as new is- 1. In anattachment for vehicles, the combination with an engaging arm secured toa bolster of the vehicle, an engaging bar secured to the axle,interlocking means between the engaging bar and the engaging arm, andspring means cooperating with the engaging arm.

2. In an attachment for vehicles, the combination with an engaging armsecured to a bolster of the vehicle, an arcuate engaging bar carried bythe axle of the vehicle, and a friction-roller carried by the engagingarm aforesaid and engagingbeneath the engaging bar and forming a stop tolimit the movement of the vehicle-body.

3. In a vehicle, the combination with an engaging arm carried by abolster thereof, a hanger secured to the bolster and receivingtheengaging arm, an engaging bar carried by an axle adjacent the armextending from'the bo1ster,spring means supported by the hanger forcodperation with the engaging arm of the bolster, and stop meansextending from the said arm for cooperation with the engaging bar.

4. In an attachment for vehicles, the combination with an engaging armsecured to a bolster of the vehicle, an arcuate engaging bar securedtothe axle of the vehicle, a hanger pendent from the bolster and receivingthe outer end of the engaging arm, and a roller carried by the engagingarm and engaging beneath the engaging bar.

5. In an attachment for vehicles, the com bination with an engaging armsecured to a bolster of the vehicle, an engaging bar carried by an axleof the vehicle, stop means projected from the engaging arm forcooperation with the engaging bar, and attachable tension meanscooperating with the engaging arm.

In testimony whereof I aftix my signature in presence of two witnesses.

GEORGE 'J. FRIEND.

